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DR. WILLIAM PENN CROOM IV M.D.
NPI 1255752648
Orthopaedic Surgery in Lancaster, CA

Active since January 02, 2014PECOS EnrolledAccepts Medicare Assignment
615 W AVENUE L, LANCASTER, CA 93534(661) 951-4801 Get Directions Write a Review

NPPES record last updated: December 3, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 3, 2021, Oct 3, 2018, Jul 7, 2017 (3 updates tracked since 2017).

About Dr. William Penn Croom Iv M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM PENN CROOM IV M.D. (NPI 1255752648) is an individual orthopaedic surgery provider in Lancaster, California, licensed in California (A127958) and active in the NPI registry since January 2014. He is enrolled in Medicare PECOS and is a graduate of Northwestern University Feinberg Medical School (2012).

NPPES Registry Identity

NPI1255752648
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. WILLIAM PENN CROOM IVCredential: M.D.
Location Address615 W AVENUE LLancaster, CA 93534-7211
Mailing Address615 W Avenue LLancaster, CA 93534-7211 · (661) 951-4801
Phone(661) 951-4801
Sole ProprietorNo
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 2012
Enumeration DateJanuary 2, 2014
Last NPPES UpdateDecember 3, 20213 updates tracked since enumeration
✔ NPI 1255752648 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in CA · A127958
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
Also ListedOrthopaedic Surgery · Sports MedicineTaxonomy 207XX0005X · License A127958 (CA)
615 W AVENUE L, Lancaster, CA 93534
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Penn Croom Iv M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1254641871
PECOS Enrollment IDI20181112002150
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93534 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SUSAN URIBE
Respiratory Therapist, Registered
615 W AVENUE L
LANCASTER, CA 93534
Los Angeles County (661) 723-2002
DR. DIANA DAVIO M.D.
Colon & Rectal Surgery
615 W AVENUE L
LANCASTER, CA 93534
Los Angeles County (661) 723-2866
MONIK JEFFERSON NP
Nurse Practitioner (Family)
615 W AVENUE L
LANCASTER, CA 93534
Los Angeles County (661) 723-2810
DR. VANESSA OUANSSI BALEMAGNA PHARMD
Pharmacist
615 W AVENUE L
LANCASTER, CA 93534
Los Angeles County (661) 723-2489
MS. ANGELA K. WILLIAMS LCSW
Social Worker (Clinical)
615 W AVENUE L
LANCASTER, CA 93534
Los Angeles County (661) 723-2177
DR. REUVEN B MINKOWITZ M.D.
Specialist
615 W AVENUE L, KAISER PERMANENTE ANTELOPE VALLEY
LANCASTER, CA 93534
Los Angeles County (661) 729-7100
KAMRAN KABOLIZADEH MD
Psychiatry & Neurology (Neurology)
615 W AVENUE L
LANCASTER, CA 93534
Los Angeles County (661) 729-7100
RUSSELL ODONO MD
Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)
615 W AVENUE L
LANCASTER, CA 93534
Los Angeles County (661) 729-7100

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Croom's NPI number?

The NPI number for William Croom is 1255752648. It was assigned to this individual provider in the NPPES registry on January 2, 2014.

Where is William Croom located?

William Croom practices at 615 W Avenue L, Lancaster, CA 93534. The listed phone number is (661) 951-4801.

What is William Croom's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is William Croom enrolled in Medicare?

Yes. William Croom is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for William Croom was last updated on December 3, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.